Cash Flow Information - Interest and Income Taxes Paid (Parenthetical) (Detail) - USD ($)		3 Months Ended			6 Months Ended	9 Months Ended
		Jan. 31, 2021	Nov. 01, 2020	Aug. 02, 2020	Nov. 01, 2020	Jan. 31, 2021	Feb. 02, 2020
Supplemental Cash Flow Elements [Line Items]
AMT credit refunds					$ 1,500,000	$ 1,500,000
Percentage of expected alternative minimum tax amount refundable in fiscal year 2021		50.00%		50.00%		50.00%
Percentage of expected alternative minimum tax amount refundable in fiscal year 2022		50.00%	50.00%		50.00%	50.00%
AMT credit carryforward refundable balance amount received				$ 746,000
Percentage of AMT credits refundable under CARES Act		100.00%				100.00%
AMT credit carryforward remaining refundable balance amount received			$ 764,000
Income taxes	[1],[2]					$ 1,192,000	$ 4,500,000
Income tax payment with foreign jurisdictions						1,700,000	3,700,000
Withholding tax payment						798,000	$ 838,000
U.S. Federal Transition Tax Payment [Member]
Supplemental Cash Flow Elements [Line Items]
Income taxes						$ 227,000

[1] In accordance with the provisions of the 2017 Tax Cuts and Jobs Act (“TCJA”), corporate taxpayers were eligible to treat prior AMT credit carryforwards as refundable. Accordingly, we elected to treat our prior AMT credit carryforward balance of $1.5 million as refundable, and as a result, 50% of the $1.5 million refundable balance was expected to be received in each our fiscal years 2021 and 2022, respectively. We received our first 50% installment totaling $746,000 during the first quarter of fiscal 2021.  

In accordance with the provisions of the CARES Act, 100% of AMT credit carryforwards for tax years beginning in the 2019 tax year were immediately refundable. Accordingly, we claimed credit for the remaining 50% installment of our refundable AMT credit carryforward in May 2020. We received our remaining 50% installment plus interest totaling $764,000 during the second quarter of fiscal 2021.

[2] During the nine-month period of fiscal 2021, income tax payments totaling $1.2 million represented income tax payments associated with our foreign jurisdictions of $1.7 million, a withholding tax payment of $798,000 paid to the Chinese government for earnings and profits repatriated to the U.S. parent company, a U.S. federal transition tax payment of $227,000 as required by the TCJA, partially offset by AMT refunds totaling $1.5 million as referenced in note (1) above. During the nine-month period of fiscal 2020, income tax payments totaling $4.5 million represented income tax payments associated with our foreign jurisdictions totaling $3.7 million and a withholding tax payment of $838,000 paid to the Chinese government for earnings and profits repatriated to the U.S. parent company.